Ndeupi mutsauko uripo pakati pe zinc plating, cadmium plating, chromium plating, uye nickel plating yesimbi pombi uyesimbi bar?
Hunhu: Zinc haina kugadzikana mumhepo yakaoma uye haina kushanduka nyore.Mumvura uye mumhepo ine unyoro, inopindirana neokisijeni kana kabhoni dhaikisaidhi kuti iumbe maokisijeni kana kuti alkaline zinc carbonate mafirimu, anogona kudzivirira zinc kuti irambe ichiita oxidize uye ichiita basa rekudzivirira.Zinc inonyanya kukanganiswa nekuora mu acids, alkalis, uye sulfides.Galvanized coatings kazhinji inorapwa passivation.Mushure mekupfuura muchromic acid kana chromate mhinduro, iyo yakaumbwa passivation firimu haikanganisike nyore nemhepo ine hunyoro, ichiwedzera zvakanyanya kugona kwayo kwekurwisa-corrosion.Kune zvikamu zvechitubu, zvikamu zvakatetepa-madziro (madziro ukobvu <0.5m), uye zvikamu zvesimbi zvinoda simba remagetsi, kubviswa kwehydrogen kunofanira kuitwa, nepo mhangura nemhangura alloy zvikamu zvingasada kubviswa kwehydrogen.Zinc plating ine mutengo wakaderera, kugadzirisa kuri nyore, uye mhedzisiro yakanaka.Iyo yakajairwa mukana we zinc haina kunaka, saka zinc plating ndeye anodic coating pane akawanda masimbi.Kushandisa: Galvanizing inoshandiswa zvakanyanya mumamiriro ekunze uye dzimwe nzvimbo dzakanaka.Asi haifanirwe kushandiswa sechikamu chekukweshana
2.Cadmium plating
Hunhu: Kune zvikamu zvinosangana nemhepo yemugungwa kana mvura yegungwa, uye mumvura inopisa inopfuura 70 ℃, cadmium plating yakagadzikana, ine yakasimba corrosion resistance, yakanaka lubrication, uye inonyungudika zvishoma nezvishoma mu dilute hydrochloric acid.Zvisinei, inonyanya kunyungudika mu nitric acid, isinganyunguriki mualkali, uye maokisidi ayo haanawo kunyungudika mumvura.Cadmium coating yakapfava kupfuura zinc coating, ine shoma hydrogen brittleness uye yakasimba adhesion.Uyezve, pasi pemamwe mamiriro e electrolysis, iyo yakawanikwa cadmium coating yakanaka kupfuura zinc coating.Asi gasi rinogadzirwa necadmium panguva yekunyunguduka rine muchetura, uye soluble cadmium salt ine chepfu zvakare.Mumamiriro ezvinhu akajairwa, cadmium ndeye cathodic coating pasimbi, uye anodic coating mumakungwa uye nepamusoro-tembiricha mamiriro ekunze.Kushandisa: Inonyanya kushandiswa kuchengetedza zvikamu kubva pakuora kwemuchadenga kunokonzerwa nemvura yegungwa kana mimwe minyungurudzo yemunyu yakafanana nemhute yemvura yegungwa.Zvikamu zvakawanda mundege, kufamba, uye maindasitiri emagetsi, zvitubu, uye zvikamu zvine shinda zvakaputirwa necadmium.Inogona kukwenenzverwa, phosphated, uye kushandiswa sependi substrate, asi haigone kushandiswa setafuraware.
Hunhu: Chromium yakagadzikana zvikuru mumhepo ine hunyoro, alkaline, nitric acid, sulfide, carbonate solutions, uye organic acids, uye inonyungudika nyore nyore muhydrochloric acid uye inopisa concentrated sulfuric acid.Pasi pekuita kwekunanga ikozvino, kana chromium layer yakashandiswa seanode, inonyungudika nyore nyore mu caustic soda solution.Iyo chromium layer ine yakasimba adhesion, yakanyanya kuoma, 800-1000V, yakanaka kupfeka kuramba, kupenya kwakasimba kwechiedza, uye kupisa kwakanyanya.Iyo haichinji ruvara pazasi 480 ℃, inotanga kuita oxidize pamusoro pe500 ℃, uye inoderedza zvakanyanya kuoma pa700 ℃.Chakashata chayo ndechekuti chromium yakaoma, ine brittle, uye inokurumidza kuvharika, iyo inonyanya kutaurwa kana ichiiswa pasi pekuchinjana mitoro.Uye ine porosity.Metal chromium inopfuudzwa zviri nyore mumhepo kuti iite passivation firimu, nokudaro ichichinja kugona kwechromium.Naizvozvo, chromium inova cathodic coating pane iron.Kuisa chromium pamusoro pezvikamu zvesimbi senge anti-corrosion layer haina kunaka, uye inowanikwa kuburikidza ne-multi-layer electroplating (kureva copper plating → nickel → chromium) kuzadzisa chinangwa chekudzivirira ngura nekushongedza.Parizvino, inoshandiswa zvakanyanya mukuvandudza kupfeka kuramba kwezvikamu, kugadzirisa zviyero, kupenya kwechiedza, uye mwenje wekushongedza.
nickel plating
Hunhu: Nickel ine kugadzikana kwakanaka kwemakemikari mumhepo uye alkaline solution, haisi nyore kusvibiswa, uye inongoiswa oxidized pane tembiricha inopfuura 600 ° C. Inonyungudika zvishoma nezvishoma mu sulfuric acid uye hydrochloric acid, asi inonyungudika nyore nyore mu dilute nitric acid.Zviri nyore kupfuudza mune yakadzika nitric acid uye nekudaro ine yakanaka corrosion resistance.Nickel coating ine kuoma kwakanyanya uye iri nyore kushandisa.
New Gapower Metal Kambani inoita basa rekupa chrome yakapfava, galvanized, nickel plated simbi pombi uye simbi dzakatenderedzwa.Iyo kambani ine masheya e20000 matani emapombi esimbi akatenderera.Tinokwanisa kupa zvakasiyana-siyana zvemapombi esimbi, mbariro dzakatenderedzwa, pombi dzesimbi dzakakwenenzverwa, uye shaft yakakwenenzverwa, kusanganisira American, Germany, Japan, uye European zviyero.Kugamuchirwa kubvunza.
Nguva yekutumira: Oct-17-2023